Shiofuki Mermaid

Based on the visual novel by Marine. Makoto, a university student with a routine of visiting a local pool to swim and observe, is approached to give swimming lessons to Marina. She demonstrates a complete inability to swim. During a lesson, physical contact while adjusting her posture causes him to become aroused, which she notices. In response, she performs oral sex on him. His subsequent touch to her genitalia prompts a loud reaction of pleasure from her, resulting in her experiencing an orgasm with ejaculation. This incident reveals a latent talent in him for inducing such a response. The narrative follows his application of this ability to induce orgasms with ejaculation in various women, including other students and a married woman.